Lassie

Lassie is back-office automation for dental and medical practices, taking on the administrative work that owner-operators rarely signed up for: posting insurance payments, reconciling claims, chasing denials and underpayments, scheduling, and the paperwork around hiring and billing. The company is building AI that runs small businesses, starting with dental practices , and it is pitched at independent practice owners who want to spend their time on patients rather than on a back office that, in the founders' telling, still looks like the 1970s. The launch marks a $47M round led by Andreessen Horowitz and a public introduction of a product that has been operating quietly for some time. Per the launch tweet, Lassie is already in use at more than 700 practices and absorbs roughly 30 hours of labor per practice each month, working autonomously rather than as a copilot that hands tasks back for review. For founders and operators watching the agentic-software space, it is a concrete data point on AI moving from drafting assistance into actually executing structured, high-volume financial workflows inside SMBs. Co-founders Steijn Pelle and Frédéric Renken came out of consumer fintech at Robinhood and Coinbase, and product roles at Superhuman and Uber, and built the company by embedding inside a dentist's office (Dr. Kwon's) to process payments by hand before writing software. They spent close to a year talking to dentists, primary care doctors, and healthcare finance teams before shipping code, then built the integrations needed for agents to read claims, reconcile payments, and post to the ledger directly. Dental is the wedge, with doctors' offices and other small businesses framed as the longer arc.